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SkyDemon vs AGI STK

SkyDemon logo

SkyDemon

Software

VFR flight planning for European pilots

From
€150/year
Rated
-
Full reviewWebsite
AGI STK logo

AGI STK

Software

Systems Tool Kit for space and aerospace analysis

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only AGI STK has a free tier, so it costs nothing to try first.
  • Each has a real cost: SkyDemon the first year costs 118 GBP against a 90 GBP renewal, so the entry price is higher than the ongoing one; AGI STK sTK is sold as a ladder of separate licences, STK Pro, STK Premium Air, STK Premium Space and STK Enterprise, so mission areas are gated behind different products
  • They diverge on capability: SkyDemon covers VFR planning, AGI STK covers Orbit analysis.

Where they differ

Only the attributes on which SkyDemon and AGI STK actually diverge.

Attributes where SkyDemon and AGI STK differ
AttributeSkyDemonAGI STK
Starting price€150/yearFree
Free tierNoYes
PlatformsIos, Android, Windows, MacosWindows, Linux
Founded20091989

Identical on both: pricing model (subscription), user rating (Not yet rated), category (Unknown).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in SkyDemon

  • VFR planning
  • Airspace display
  • Weather overlay
  • Navigation
  • Flight logging
  • Traffic receivers
  • FLARM
  • ADS-B

Only in AGI STK

  • Orbit analysis
  • 4D visualization
  • Mission planning
  • Communication analysis
  • Conjunction assessment
  • MATLAB
  • Python
  • C++/.NET API

Both cover

  • Data encryption
  • Windows support

What people use each for

The jobs each tool is most often brought in to do.

SkyDemon

  • VFR flight planning and navigation for general aviationnot AGI STK
  • In flight moving map and airspace awareness on a tabletnot AGI STK

AGI STK

  • Modelling satellite orbits, coverage and conjunction risknot SkyDemon
  • Mission analysis and visualization for air, space and defence systemsnot SkyDemon

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

SkyDemon

  • The first year costs 118 GBP against a 90 GBP renewal, so the entry price is higher than the ongoing one
  • Extra airfield maps and flight guides are sold as separate annual subscriptions on top of the base licence
  • Prices for those additional regional guides are not listed on the store page

AGI STK

  • STK is sold as a ladder of separate licences, STK Pro, STK Premium Air, STK Premium Space and STK Enterprise, so mission areas are gated behind different products
  • Further capability is sold as separate add-on toolkits including TETK, the RF Channel Modeler and the STK Missile Toolkit
  • Distributing an application built on STK Engine to end users requires each of them to hold an Ansys STK Engine Runtime License
  • Free access is limited to students at accredited institutions and to time-limited trials
  • No price, minimum or cost driver is published for any STK tier

Pricing, plan by plan

SkyDemon

€150/year
  • SkyDemon$150/year
    • Flight planning
    • European charts
    • Weather data
  • SkyDemon + Australia$220/year
    • Europe + Australia
    • All features
    • Extended coverage

AGI STK

Free
  • STK FreeFree
    • Basic analysis
    • 2D/3D visualization
    • Orbit analysis
  • STK Professional$15000/year
    • Advanced analysis
    • Premium modules
    • API access
  • STK Enterprise$50000/year
    • All modules
    • Multi-user
    • Custom solutions

Which should you pick?

Choose SkyDemon if

  • You need vfr planning.
  • You work on Ios, Android, Windows, Macos.
  • You also want airspace display.
SkyDemon review

Choose AGI STK if

  • You need orbit analysis.
  • You want to start without paying.
  • You work on Windows, Linux.
  • You also want 4d visualization.
AGI STK review

Questions people ask

Is SkyDemon or AGI STK better?
Neither clearly leads. SkyDemon starts at €150/year and AGI STK at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, SkyDemon or AGI STK?
AGI STK has a free tier; the other does not. Paid plans start at €150/year for SkyDemon and Free for AGI STK.
Does SkyDemon or AGI STK run on more platforms?
SkyDemon runs on Ios, Android, Windows, Macos. AGI STK runs on Windows, Linux.
Can I use AGI STK for free?
Yes. AGI STK has a free tier, so you can try it without paying. SkyDemon starts at €150/year.
What is SkyDemon best used for?
SkyDemon is most often used for vfr flight planning and navigation for general aviation, in flight moving map and airspace awareness on a tablet. Of those, vfr flight planning and navigation for general aviation and in flight moving map and airspace awareness on a tablet are not what AGI STK is typically brought in for.
What can SkyDemon do that AGI STK cannot?
SkyDemon covers VFR planning, Airspace display, Weather overlay, Navigation. AGI STK covers Orbit analysis, 4D visualization, Mission planning, Communication analysis. Both handle Data encryption, Windows support.
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